中断函数可以进入，我设置的LED标志也都能动作。在中断服务函数里加的串口数据发送却不能执行，这是为什么。串口程序也单独测过-belle0206的回答

中断函数可以进入，我设置的LED标志也都能动作。在中断服务函数里加的串口数据发送却不能执行，这是为什么。串口程序也单独测过

2019-08-17 03:23发布

u8  conmmend_start[]=       {0x7e,0x03,0x01,0x02,0xef}; //2￥·Å
u8  conmmend_pause[]=       {0x7e,0x03,0x02,0x01,0xef}; //ÔYí￡
u8  conmmend_music_down[]= {0x7e,0x03,0x03,0x00,0xef}; //ÏÂò»Çú
u8  conmmend_music_up[]=    {0x7e,0x03,0x04,0x07,0xef}; //éÏò»Çú

u8 M_Type; //Ä￡ê½Ñ¡Ôñ±êÖ¾
u8 PWM_numb;

u8 cnt=0;

void EXTIX_Init(void)
{

EXTI_InitTypeDef EXTI_InitStructure;
NVIC_InitTypeDef NVIC_InitStructure;

KEY_Init();    // °′¼ü¶Ë¿ú3õê¼»ˉ

    RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO,ENABLE); //ê1Äü¸′óÃ1|Äüê±Öó

//GPIOA.7 ÖD¶ÏÏßòÔ¼°ÖD¶Ï3õê¼»ˉÅäÖÃ ÏÂ½μÑØ′￥·￠
    GPIO_EXTILineConfig(GPIO_PortSourceGPIOA,GPIO_PinSource7);

    EXTI_InitStructure.EXTI_Line=EXTI_Line7; //KEY2
    EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
    EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling;
    EXTI_InitStructure.EXTI_LineCmd = ENABLE;
    EXTI_Init(&EXTI_InitStructure);      //¸ù¾YEXTI_InitStructÖDÖ¸¶¨μÄ2Îêy3õê¼»ˉíaéèEXTI¼Ä′æÆ÷

//GPIO¡￡8    ÖD¶ÏÏßòÔ¼°ÖD¶Ï3õê¼»ˉÅäÖÃ ÏÂ½μÑØ′￥·￠ //KEY1
    GPIO_EXTILineConfig(GPIO_PortSourceGPIOA,GPIO_PinSource9);
    EXTI_InitStructure.EXTI_Line=EXTI_Line9;
    EXTI_Init(&EXTI_InitStructure);       //¸ù¾YEXTI_InitStructÖDÖ¸¶¨μÄ2Îêy3õê¼»ˉíaéèEXTI¼Ä′æÆ÷

//GPIOA.11    ÖD¶ÏÏßòÔ¼°ÖD¶Ï3õê¼»ˉÅäÖÃ  ÏÂ½μÑØ′￥·￠ //KEY0
    GPIO_EXTILineConfig(GPIO_PortSourceGPIOA,GPIO_PinSource11);
    EXTI_InitStructure.EXTI_Line=EXTI_Line11;
    EXTI_Init(&EXTI_InitStructure);       //¸ù¾YEXTI_InitStructÖDÖ¸¶¨μÄ2Îêy3õê¼»ˉíaéèEXTI¼Ä′æÆ÷

NVIC_InitStructure.NVIC_IRQChannel = EXTI9_5_IRQn; //ê1Äü°′¼üKEY2ËùÔúμÄía2¿ÖD¶Ïí¨μà
    NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0x03; //ÇàÕ¼óÅÏè¼¶2￡¬
    NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0x03; //×óóÅÏè¼¶3
    NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; //ê1Äüía2¿ÖD¶Ïí¨μà
    NVIC_Init(&NVIC_InitStructure);

    NVIC_InitStructure.NVIC_IRQChannel = EXTI15_10_IRQn; //ê1Äü°′¼üKEY1ËùÔúμÄía2¿ÖD¶Ïí¨μà
    NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0x03; //ÇàÕ¼óÅÏè¼¶2
    NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0x02; //×óóÅÏè¼¶2
    NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; //ê1Äüía2¿ÖD¶Ïí¨μà
    NVIC_Init(&NVIC_InitStructure);       //¸ù¾YNVIC_InitStructÖDÖ¸¶¨μÄ2Îêy3õê¼»ˉíaéèNVIC¼Ä′æÆ÷

}

//ía2¿ÖD¶Ï7 8·tÎñ3ìDò
void EXTI9_5_IRQHandler()
{
u8 t;
if(M_Type==MODE_GRAPIC)
   {
delay_ms(10);//Ïû¶¶
if(KEY0==0) //PA7°′ÏÂ ±￡Ö¤PWM_numbÔú0μ½6Ö®¼ä±ä»ˉ
   {
      LED1=0;
   LED4=1;
   PWM_numb++;
   if(PWM_numb>=7)PWM_numb=0;
   }
if(KEY1==0) //PA9°′ÏÂ
   {
   LED1=1;
   LED4=0;
   PWM_numb++;
   if(PWM_numb==0)PWM_numb=6;
   }
   }
if(M_Type==MODE_MUSIC)
{
delay_ms(10);//Ïû¶¶
   if(KEY0==0) //PA7°′ÏÂ
   {
LED2=0;
for(t=0;t<5;t++)
{
USART_SendData(USART1, conmmend_music_down[t]);//Ïò′®¿ú1·￠Ëíêy¾Y0x7e,0x03,0x03,0x00,0xef
while(USART_GetFlagStatus(USART1,USART_FLAG_TC)!=SET);//μè′y·￠Ëí½áêø
}
   }
   if(KEY1==0) //PA8°′ÏÂ
   {
LED2=1;
for(t=0;t<5;t++)
{
USART_SendData(USART1, conmmend_music_up[t]);//Ïò′®¿ú1·￠Ëíêy¾Y0x7e,0x03,0x03,0x00,0xef
while(USART_GetFlagStatus(USART1,USART_FLAG_TC)!=SET);//μè′y·￠Ëí½áêø
}
   }
}
EXTI_ClearITPendingBit(EXTI_Line7); //Çå3yLINE7éÏμÄÖD¶Ï±êÖ¾Î»
EXTI_ClearITPendingBit(EXTI_Line8); //Çå3yLINE8éÏμÄÖD¶Ï±êÖ¾Î»
}
//ía2¿ÖD¶Ï7 8·tÎñ3ìDò
void EXTI15_10_IRQHandler()
{
u8 t;
delay_ms(10);//Ïû¶¶
if(KEY2==0) //PA8°′ÏÂ
   {
LED3=~LED3;
if(LED3==0)
   {
M_Type=MODE_GRAPIC; //ÇD»»Öá×Ô¶¨òåÑYê¾Ä￡ê½￡¬2￠í￡Ö12￥·ÅòôàÖ
   LED8=1;
for(t=0;t<5;t++)
{
USART_SendData(USART1, conmmend_pause[t]);//Ïò′®¿ú1·￠Ëíêy¾Y0x7e,0x03,0x02,0x01,0xef
while(USART_GetFlagStatus(USART1,USART_FLAG_TC)!=SET);//μè′y·￠Ëí½áêø
}
}
if(LED3==1)
{
M_Type=MODE_MUSIC; //ÇD»»ÖáòôàÖÄ￡ê½￡¬2￠2￥·ÅòôàÖ
LED8=0;
for(t=0;t<5;t++)
{
USART_SendData(USART1, conmmend_start[t]);//Ïò′®¿ú1·￠Ëíêy¾Y0x7e,0x03,0x01,0x02,0xef
while(USART_GetFlagStatus(USART1,USART_FLAG_TC)!=SET);//μè′y·￠Ëí½áêø
}
}
}
EXTI_ClearITPendingBit(EXTI_Line11); //Çå3yLINE0éÏμÄÖD¶Ï±êÖ¾Î»
}

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6条回答

belle0206

2019-08-17 09:59

ARM学员发表于 2017-7-3 17:55
仅仅是不能执行吗，系统有没有死掉？在中断里面程序执行的时间尽量短，调用“USART_SendData（）”函数程序 ...

你是怎么处理的

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中断函数可以进入，我设置的LED标志也都能动作。在中断服务函数里加的串口数据发送却不能执行，这是为什么。串口程序也单独测过

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